A liquid nitrogen cryogenic box with an automatic lifting material rack

Abstract

The present invention relates to a liquid nitrogen cryogenic box with an automatically lifting material rack, comprising a liquid nitrogen cryogenic box body, a box cover provided on the box body, ears hinged on both sides of the rear end of the box cover, the ears fixed to the box body, a flip assembly provided between both sides of the front of the box cover and the box body, a material rack provided in the box body, a linkage rack hinged on the material rack, the linkage rack fixed to the lower end surface of the box cover; the material rack comprises a plurality of oblique longitudinal lifting tubes, a plurality of transverse hanging rods are fixedly connected to the middle and upper parts of the lifting tubes, a guide shaft is connected to the lower end of the lifting tube, a circular rotating head is formed on the lower end of the guide shaft, the rotating head is inserted into a first hinged support and hinged to the first hinged support via a pin shaft, and the first hinged support is fixed in the box body. Based on the opening of the box cover, the liquid nitrogen cryogenic box can drive the material rack in the box body to rotate forward and rise out of the cryogenic box, making it convenient to take and place workpieces from the material rack.

Description

Technical field:

[0001] The present invention relates to the technical field of cryogenic boxes, and more particularly to a liquid nitrogen cryogenic box with an automatically lifting material rack disposed therein. Background technology:

[0002] Cryogenic treatment refers to a method of treating workpieces at temperatures below -130°C using liquid nitrogen as a refrigerant. Cryogenic treatment can significantly improve the toughness of workpieces without reducing their strength and hardness. Currently, cryogenic treatment is carried out in a dedicated liquid nitrogen cryogenic box, which includes a box body and a box cover. Some liquid nitrogen cryogenic boxes are equipped with a fixed-structure material rack inside the box. Workpieces that require cryogenic treatment can be hung on the material rack for cryogenic treatment. However, existing material racks are generally stored inside the box, and the height of the liquid nitrogen cryogenic box requires personnel to stand on a stepped footrest and bend over to hang or take workpieces from the material rack, which is inconvenient. Therefore, a structure is needed to facilitate the hanging of workpieces on or taking materials from the material rack. Summary of the invention:

[0003] The purpose of the present invention is to address the shortcomings of the existing technology and provide a liquid nitrogen cryogenic box with an automatically lifting material rack. The liquid nitrogen cryogenic box can drive the material rack inside the box to rotate forward and rise out of the cryogenic box based on the opening of the box cover, making it convenient to take and place workpieces from the material rack.

[0004] A liquid nitrogen cryogenic box with an automatically lifting material rack, comprising a liquid nitrogen cryogenic box body, a box cover provided on the box body, ears hingedly connected to both sides of the rear end of the box cover, the ears fixed to the box body, a flip assembly provided between both sides of the front of the box cover and the box body, a material rack provided in the box body, a linkage frame hingedly connected to the material rack, and the linkage frame fixed to the lower end surface of the box cover;

[0005] The material rack includes a plurality of oblique longitudinal lifting tubes, a plurality of transverse hanging rods are fixedly connected to the middle and upper parts of the lifting tubes, a guide plug shaft is connected to the lower end of the lifting tube, and a circular rotating head is formed at the lower end of the guide plug shaft. The rotating head is inserted into the first hinge support and is hinged to the first hinge support through a pin shaft. The first hinge support is fixed in the box body;

[0006] The linkage frame comprises linkage arms fixed on both sides of the box cover, the front ends of the linkage arms are plugged with T-shaped transverse positioning pins, and the positioning pins are plugged and fixed on the middle and upper parts of the lifting tubes.

[0007] Preferably, the center distance between the front end of the linkage arm on the linkage frame and the ear seat is smaller than the center distance between the front end of the box cover and the ear seat.

[0008] Preferably, the flipping assembly includes an inclined flipping cylinder, the bottom of the flipping cylinder body is sleeved with a second hinged support and hinged to the second hinged support through a pin shaft, and the second hinged support is fixed on the box body; a circular connecting head is fixed on the piston rod of the flipping cylinder, and a hinge shaft is inserted into the connecting head, and the hinge shaft is inserted and fixed on the two side walls of the box cover.

[0009] Preferably, the tilting direction of the flip cylinder on the flip assembly is opposite to the tilting direction of the box cover.

[0010] Preferably, an oblique reinforcement rod is fixed on the linkage arm, and the upper end of the reinforcement rod is fixed on the lower end surface of the box cover.

[0011] Preferably, the lifting tubes on the material rack are evenly distributed on the hanging rod in a linear manner, and hooks are fixed on the hanging rod between adjacent lifting tubes.

[0012] Preferably, the hooks are linearly and evenly distributed on the hanging rod, and the vertical distance from the upper end of the lifting tube to the upper end surface of the box body is smaller than the distance between the middle of the lifting tube and the upper end of the guide plug shaft; the diameter of the guide plug shaft is equal to the inner tube diameter of the lifting tube.

[0013] The beneficial effects of the present invention are:

[0014] The liquid nitrogen cryogenic box can drive the material rack inside the box to rotate forward, rise and extend out of the cryogenic box based on the opening of the box cover, so that the workpiece can be taken out and placed from the material rack conveniently. Description of the drawings:

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the present invention;

[0017] Figure 3 It is a schematic structural diagram of the side view of the present invention.

[0018] In the figure: 1. Box body; 20. Box cover; 3. Ear seat; 4. Flip assembly; 41. Flip cylinder; 42. Second articulated support; 43. Connecting head; 44. Articulated shaft; 5. Material rack; 51. Lifting tube; 52. Hanging rod; 53. Guide plug shaft; 531. Rotating head; 54. First articulated support; 55. Hook; 6. Linkage frame; 61. Linkage arm; 611. Reinforcement rod; 62. Positioning pin. Specific implementation method:

[0019] Example: See Figure 1 、 2As shown, a liquid nitrogen cryogenic box with an automatically lifting material rack is provided, comprising a liquid nitrogen cryogenic box body 1, a box cover 2 is provided on the box body 1, ears 3 are hinged on both sides of the rear end of the box cover 2, and the ears 3 are fixed to the box body 1, and a flip assembly 4 is provided between both sides of the front of the box cover 2 and the box body 1, a material rack 5 is provided in the box body 1, and a linkage frame 6 is hinged on the material rack 5, and the linkage frame 6 is fixed to the lower end surface of the box cover 2;

[0020] See Figure 1 As shown, the material rack 5 includes a plurality of oblique longitudinal lifting tubes 51, a plurality of transverse hanging rods 52 are fixedly connected to the middle and upper parts of the lifting tubes 51, a guide plug shaft 53 is connected to the lower end of the lifting tube 51, and a circular rotating head 531 is formed at the lower end of the guide plug shaft 53. The rotating head 531 is inserted into a first hinge support 54 and is hinged to the first hinge support 54 through a pin. The first hinge support 54 is fixed in the box body 1;

[0021] See Figure 3 As shown, the linkage frame 6 includes linkage arms 61 fixed on both sides of the box cover 2. The front end of the linkage arm 61 is plugged with a T-shaped horizontal positioning pin 62, and the positioning pin 62 is plugged and fixed to the middle and upper parts of the lifting tube 51.

[0022] The center distance between the front end of the linkage arm 61 on the linkage frame 6 and the ear seat 3 is smaller than the center distance between the front end of the box cover 2 and the ear seat 3 .

[0023] See Figure 3 As shown, the flip assembly 4 includes an inclined flip cylinder 41, and the bottom of the cylinder body of the flip cylinder 41 is sleeved with a second hinged support 42 and is hinged to the second hinged support 42 through a pin, and the second hinged support 42 is fixed on the box body 1; a circular connecting head 43 is fixed on the piston rod of the flip cylinder 41, and a hinge shaft 44 is inserted into the connecting head 43, and the hinge shaft 44 is inserted and fixed on the two side walls of the box cover 2.

[0024] See Figure 3 As shown, the tilting direction of the tilting cylinder 41 on the tilting assembly 4 is opposite to the tilting direction of the box cover 2.

[0025] See Figure 3 As shown, an oblique reinforcement rod 611 is fixed on the linkage arm 61 , and the upper end of the reinforcement rod 611 is fixed on the lower end surface of the box cover 2 .

[0026] The lifting tubes 51 on the material rack 5 are evenly distributed on the hanging rod 52 in a linear manner, and hooks 55 are fixed on the hanging rod 52 between adjacent lifting tubes 51 .

[0027] See Figure 2As shown, the hooks 55 are linearly and evenly distributed on the hanging rod 52, and the vertical distance from the upper end of the lifting tube 51 to the upper end surface of the box body 1 is smaller than the distance between the middle of the lifting tube 51 and the upper end of the guide plug shaft 53; the diameter of the guide plug shaft 53 is equal to the inner tube diameter of the lifting tube 51. When the box cover 2 is flipped over and closed, the lifting tube 51 on the material rack 5 can be retracted and stored in the box body 1.

[0028] Working principle: The present invention is a liquid nitrogen cryogenic box with an automatic lifting material rack. The box body 1 of the liquid nitrogen cryogenic box is provided with Figure 1 The material rack 5 of the middle structure is hinged to the box cover 2 through the linkage frame 6. When the flip assembly 4 drives the box cover 2 to flip backward and upward around the ear seat 3, the linkage frame 6 fixed on the box cover 2 rotates together with the box cover 2, and then the front end of the linkage frame 6 can drive the lifting tube 51 on the material rack 5 to rotate backward around the first hinge support 54 and move on the guide plug shaft 53. When the box cover 2 is opened, Figure 1 As shown, the upper end of the lifting tube 51 can extend out of the box body 1 of the liquid nitrogen cryogenic box, making it convenient to hang or take the workpiece from the hanging rod 52.

[0029] The embodiments are intended to illustrate the present invention and are not intended to limit the present invention. Any person skilled in the art may modify the embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be as set forth in the claims of the present invention.

Claims

1. A liquid nitrogen cryogenic box with an automatically lifting material rack, comprising a liquid nitrogen cryogenic box body (1), a box cover (2) provided on the box body (1), ears (3) hinged on both sides of the rear end of the box cover (2), the ears (3) being fixed on the box body (1), and a flip assembly (4) provided between both sides of the front of the box cover (2) and the box body (1), characterized in that: A material rack (5) is provided in the box body (1), a linkage rack (6) is hingedly connected to the material rack (5), and the linkage rack (6) is fixed on the lower end surface of the box cover (2); The material rack (5) includes a plurality of oblique longitudinal lifting tubes (51), a plurality of transverse hanging rods (52) are fixedly connected to the middle and upper parts of the lifting tubes (51), a guide plug shaft (53) is connected to the lower end of the lifting tube (51), and a circular rotating head (531) is formed at the lower end of the guide plug shaft (53), and the rotating head (531) is inserted into the first hinge support (54) and hinged to the first hinge support (54) through a pin shaft, and the first hinge support (54) is fixed in the box body (1); The linkage frame (6) includes linkage arms (61) fixed on both sides of the box cover (2), and the front end of the linkage arm (61) is plugged with a T-shaped horizontal positioning pin (62), and the positioning pin (62) is plugged and fixed to the middle and upper parts of the lifting tube (51); the lifting tubes (51) on the material rack (5) are linearly and evenly distributed on the hanging rod (52), and hooks (55) are fixed on the hanging rod (52) between adjacent lifting tubes (51); The hooks (55) are linearly and evenly distributed on the hanging rod (52); the vertical distance between the upper end of the lifting tube (51) and the upper end surface of the box body (1) is smaller than the distance between the middle of the lifting tube (51) and the upper end of the guide plug shaft (53); the diameter of the guide plug shaft (53) is equal to the inner diameter of the lifting tube (51).

2. The liquid nitrogen cryogenic box with an automatic lifting material rack according to claim 1, characterized in that: The center distance between the front end of the linkage arm (61) on the linkage frame (6) and the ear seat (3) is smaller than the center distance between the front end of the box cover (2) and the ear seat (3).

3. The liquid nitrogen cryogenic box with an internal automatic lifting material rack according to claim 1, characterized in that: The flip assembly (4) includes an oblique flip cylinder (41), the bottom of the flip cylinder (41) is sleeved with a second hinged support (42) and is hinged to the second hinged support (42) through a pin, and the second hinged support (42) is fixed to the box body (1); a circular connecting head (43) is fixed on the piston rod of the flip cylinder (41), and a hinge shaft (44) is inserted into the connecting head (43), and the hinge shaft (44) is inserted and fixed on the two side walls of the box cover (2).

4. The liquid nitrogen cryogenic box with an internal automatic lifting material rack according to claim 3, characterized in that: The tilting direction of the tilting cylinder (41) on the tilting assembly (4) is opposite to the tilting direction of the box cover (2).

5. The liquid nitrogen cryogenic box with an internal automatic lifting material rack according to claim 1, characterized in that: An oblique reinforcement rod (611) is fixed on the linkage arm (61), and the upper end of the reinforcement rod (611) is fixed on the lower end surface of the box cover (2).

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